51.72—Supplement to draft environmental impact statement.
        
        (a) 
         The NRC staff will prepare a supplement to a draft environmental impact statement for which a notice of availability has been published in the Federal Register as provided in  § 51.117, if:
    
    
        
        (1) 
         There are substantial changes in the proposed action that are relevant to environmental concerns; or
    
    
        
        (2) 
         There are significant new circumstances or information relevant to environmental concerns and bearing on the proposed action or its impacts.
    
    
        
        (b) 
         The NRC staff may prepare a supplement to a draft environmental impact statement when, in its opinion, preparation of a supplement will further the purposes of NEPA.
    
    
        
        (c) 
         The supplement to a draft environmental impact statement will be prepared and noticed in the same manner as the draft environmental impact statement except that a scoping process need not be used.